Radiator core



Feb. 25, 1936.

, A. B. MODINE 2,032,065

RADIATOR CORE Filedy Nov. 1e, 1952 MM gj@ Patented Feb. 25, 1936 UNITED STATES u PATENT OFFICE accepts Y nanniron conn corporation of Wisconsin Application November 1d, 1932, Serial No. 642,889 a claims. (crest-13o) The invention relates to improvements in radiator cores such as those employed in automobiles and heat exchange devices and has as its principal object the provision of a construction which will materially increase the rate of heat exchange between the iiuid circulating through the radiator and the cooling medium or air advanced through the core.

It is a further lobject of the invention to provide a construction whereby turbulence of both the fluid to be cooled and the air advanced through the core is secured, thus materially increasing the heat exchange capacity of the radiator.

In addition tothe above, it is an object to construct a radiator of tubes and iins, both of which are provided with means for respectively causing turbulence oi' the fluid circulating through the tubes and the air advancedover the fins.

The invention has these and other objects, all of which will be readily understood when read in conjunction with the accompanying drawing which illustrates one embodiment of which the invention is susceptible, it being manifest that changes and modifications may be resorted to Without departing from the spirit of the appended claims forming a part hereof.

In the drawing, Fig. 1 is a front elevation of a heat exchange device comprised of tubes and iins having the invention applied thereto;

Fig. 2 is a perspective view of a fragment of the tube and iin structure employed in Fig. 1;

Fig. 3 is a side elevation of the structure shown in Fig. 2; and

Fig. 4 is a section taken on line 4 4 of Fig. 3.

The radiator core shown in Fig. 1 contemplates the utilization of a plurality of tubes generally designated Ill having the opposite ends thereof respectively connected with the headers II and I2, the tubes having dns generally designated I3 arranged transversely of the tubes. The tubes are relatively at or elongated in cross section and the ns are preferably of a length suicient to accommodate the several tubes, it being understood that each of the ns is provided with a plurality of openings for the reception of the respec-v tive tubes.

As before stated, it is an object of the invention to provide a construction which will increase the cooling capacity of the core and to this end, all of the tubes and also all of the fins are each provided with means for respectively causing turbulence of the fluid circulating through the tubes and causing turbulence of air engaging the ns. In the structure shown, all of the tubes are provided at intervals of their length with inwardly projecting protuberances I4 which are arranged transversely of the tubes and project into the path of the fluid circulating through the tubes and cause turbulence to be imparted to the duid 5 circulating through said tubes and in addition cause the iiuid to be projected against the oppositevside of the tube to engage with the portions I5I5 thereof to cause a scrubbing action'between the walls of the tube and the fluid which 10 will displace the iiuid adJacent the inner face of these Walls and cause another portion of fluid to be presented to the cooling effect thereof.

As before stated, heat radiating ns are associated with the tubes generally designated I0. 15 These ns are constructed to provide means for causing turbulence of air passing between the ns and tubes which will materially aid the cooling eifect of this air and increase the cooling capacity of the radiator. This means for causing 2o turbulence of the air comprises a plurality of corrugations I6 and Il which preferably extend longitudinally of each iin from one end to the other thereof and provide means arranged transversely of the path of the air passing through the 25 radiator for causing its turbulence. These corrugations are of a varied character and it will be noted that those near the forward side of the radiator are of greater amplitude and that the amplitude of the corrugations diminishes toward 30 the rear portion of the ns and that the greatest turbulence is therefore created at the front or forward part of the space between the iins. This turbulence of the air combined with the turbulence of the uid circulating through the 35 tubes materially increases the eiliciency of the radiator as a heat exchange device.

The protuberances Il may be formed in the tube by indenting the material of the tube at intervals of its length, it being understood that 40 these protuberances are formed in the opposite side walls of the tube and preferably with the protuberances of one side of the tube offset relatively to the protuberances of the opposite side of the tube.

From the foregoing description of the structure, it is believed manifest that radiator core is produced comprised of tubes and fins each having means for respectively causing turbulence of uid circulating through the tubes and air ad- 50 vanced between the iins which will materially enhance the cooling capacity of the device without materially adding to the cost thereof and in which the air initially introduced to the structure has the greatest turbulence applied thereto 56 fins.

Having ent is: 1. A radiator to form a' zigzag channel of substantially uniiorm width adapted to direct a fluid owing through said tube alternately from side to side and against the opposite sides and projections of the tube turbulently, in combination with a pluralty of iins arranged transverse-ly of said tubes and engaging the walls thereof said this being corrugated and spaced to form a zigzag channel of substantially uniform width between said xi's, thereby directing the air passing therebetween from side to side of said channel and against said ns turbulently, said corrugations being of maximum amplitude at the forward side of said ns and diminishing toward the rear thereof.

2. A radiator core comprising' a. plurality of tubes each having inwardly protruding transverse projections upon their opposite sides spaced to form a zigzag channel adapted to direct a fluid owing through said tubes alternately from side to side and against the opposite sides andl projections of the tubes turbulently, in combination' thus described the invention, what I l claim asgnew and desire to cover by Letters Patwith a plurality of nsarranged transversely ci said tubes andgengaging the walls thereof, said Y fins being corrugated and spaced to form a zig;

zag chlannel of substantially uniform width beiY tween said fins,Y thereby directing the'air passing therebetween from side to side of said channel core comprising a plurality of if tubes each having inwardly protruding transi verse projections upon their opposite sides spaced and against said fins turbulently, said'gcorrugations being oi!Y maximum amplitude atY the forward side of said fins and diminishing toward the rear thereof.

3. A radiator core comprising a plurality of flattened tubes each having inwardly protruding transverse projections on their opposite sides spaced to form a channel having zigzag portions adjacent the edge portions ef the tubes and adapted to directa fluid flowing therethrough alternately in opposite directions transversely to the longitudinal plane of the tubes and turbulently against oppositely disposed sides thereof, in combination with a plurality of iins arranged transversely of said tubes and engaging the walls thereof, said fins being corrugated and spaced to form a zigzag channel of substantially unform width between said ns thereby directing the air passing therebetween from side to side of said last mentioned channel and against said fins turbulently, said eorrugations being of maximuni amplitude atthe forwardside of said ins and diminishing toward the rear thereof.

ARTHUR B. MODIN. 

